Very Long Form in modal box?

1. How big should modals be?
2. How to increase the size of modal dialog?
3. How do I make modal scrollable?
4. When a modal box appears what should the user do?

How big should modals be?

Don't make your modals too big

By restricting the size of your modals to 20-25% of the overall user interface, and by keeping what the user was doing previously behind a translucent background, you can keep the disruption to a minimum.

How to increase the size of modal dialog?

Modal Size

Change the size of the modal by adding the .modal-sm class for small modals, .modal-lg class for large modals, or .modal-xl for extra large modals.

How do I make modal scrollable?

Use the . modal-dialog-scrollable class to enable scrolling inside the modal.

When a modal box appears what should the user do?

The purpose of modals can be summed up in one word: focus. If you need visitors to focus on something simple, a modal window is one of the most effective means to do so. Users must either close the modal, or complete a specific action within it (e.g., reading a message and clicking “OK”, filling out a form, etc.).